Hi Sanjeev,
Use the method that’s most convenient for you. As long as it boots, it doesn’t make much of a difference from the perspective of the Rocky Linux installer.
Make sure to set up and use a local mirror if you’re installing more than a few dozen machines. Not strictly necessary, but common courtesy.
V/R,
-- Brian Clemens Cofounder and Vice President, Rocky Enterprise Software Foundation Board Vice Chair, Linux Professional Institute